Composition cement for pavements



UNITED STATES -PATENT OFFICE.

ALBERT M. SHAW, OF LEBANON, NEW HAMPSHIRE.

CO'MPO-SITION CEMENT FOR PAVEMENTS, 80C.

Specification forming part of Letters Patent No. 75,473, dated March 10,1868.

To all whom it may concern Be it known that I, ALBERT M. SHAW, ofLebanon, in the county of Grafton and State of New Hampshire, haveinvented a new and Improved Composition Cement for Pavements andFlooring of Fire-Proof Buildings, and for other purposes; and I dohereby declare that the following is a full and exact descriptionthereof, and of the composition of the same ing is laid upon the surfaceof the ground, I

take pebble-stones, s'ufficient to cover the surface to be paved to adepth of three inc-hes, and saturate the said stones with the abovenamedmixture in a heated state, and spread said pebbles over the surface tobe floored to the proper depth, and roll the same down. I then takesufficient gravel to cover said surface to the depth of about one inch,and saturate the same with the same mixture, and spreadit evenly oversaid pebble-stones to the requisite depth, and roll it down. I then takesand sufficient to cover my surface to the depth of one inch, saturatethe same with said mixture, and spread it evenly over the gravelcoating, and roll it down smooth, and leave the same to harden.

If a fine and smooth surface is required for rooms, I use ground slateinstead of sand for my finishing-coat; and in rooms where the flooringis not laid directly on the ground, I dispense with the lower stratum ofpebblestones.

What I claim as my invention, and desire to secure by Letters Patent,is-

A cement for pavements and flooring, roofing, and other purposes,composed of the ingredients above named, mixed, applied, and finished inthe manner above described.

A. M. SHAW.

Witnesses:

N. RoBINsoN, H. K. DEWEY.

